清空慢查询日志

Question

下午好，

我们正在尝试访问位于“/var/log/mysql/localhost-slow.log”的慢查询日志文件，但看起来该文件为空。 “my.cnf”文件显示“!includedir /etc/my.cnf.d”，在该目录中我们有以下文件：

mysql-clients.cnf;
server.cnf;
tokudb.cnf;

查看“server.cnf”文件，它似乎已正确设置为写入慢查询日志：

#
# These groups are read by MariaDB server.
# Use it for options that only the server (but not clients) should see
#
# See the examples of server my.cnf files in /usr/share/mysql/
#

# this is read by the standalone daemon and embedded servers
[server]

# this is only for the mysqld standalone daemon
[mysqld]
slow-query-log = 1
slow-query-log-file = /var/log/mysql/localhost-slow.log
long_query_time = 1
log-queries-not-using-indexes
# this is only for embedded server
[embedded]

# This group is only read by MariaDB-5.5 servers.
# If you use the same .cnf file for MariaDB of different versions,
# use this group for options that older servers don't understand
[mysqld-5.5]

# These two groups are only read by MariaDB servers, not by MySQL.
# If you use the same .cnf file for MySQL and MariaDB,
# you can put MariaDB-only options here
[mariadb]

[mariadb-5.5]

我们已尝试设置 GLOBAL general_log = 'ON';但这没有帮助。知道可能是什么问题吗？

Answer 1

验证它是否真的在读取该文件：

mysqld --verbose --help | head -33

你可能会看到

Default options are read from the following files in the given order:

后跟文件路径列表。